CVE-2011-0420

Php vulnerability

CVSS

5.0

EPSS

14.4%

EPSS pct

96th

Exploited

No known

The grapheme_extract function in the Internationalization extension (Intl) for ICU for PHP 5.3.5 allows context-dependent attackers to cause a denial of service (crash) via an invalid size argument, which triggers a NULL pointer dereference.

Affected vendor

Php

Affected product

Php

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Published

2011-02-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 14.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2011-0420

Confirm whether Php Php is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2011-0420.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-0420

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2011-0420 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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